Thank you for your service to our nation, and thanks to your family, too, who also sacrifice for us all.
Arizona is full of places to camp, and hang, but warm is relative. Here in the White Mountains it is in the upper 30's during the day, mid-upper 20's at night, and we currently have about 5" of snow on the ground. Down in the desert it's ranging from the 50's to low 70's during the day and the 20's to 50's at night, depending on elevation and location. Yuma, and other places along the Colorado River, are warmest, but there are few trees to hang on. The hills around Phoenix and Tucson have lots of neat places to hang, but it's higher, and colder, too.
You can be wet and miserable, or you can choose to just be wet.